xz: Fix build with --disable-threads.

diff --git a/src/xz/hardware.c b/src/xz/hardware.c
index 3d10edc91b8715858caf289d01d89e009eb29a76..986d0c1b7c8d6517d9ad1a9589536dadb77fb827 100644 (file)
--- a/src/xz/hardware.c
+++ b/src/xz/hardware.c
@@ -91,7 +91,11 @@ hardware_threads_get(void)
 extern bool
 hardware_threads_is_mt(void)
 {
+#ifdef MYTHREAD_ENABLED
        return threads_max > 1 || threads_are_automatic;
+#else
+       return false;
+#endif
 }